Forecasters say Hurricane Humberto has formed in the Atlantic Ocean but is not currently threatening land as the former Hurricane Gabrielle is passing across the Azores.

Two tropical cyclones are barreling through the Atlantic on a potential collision course — and if they clash, a freak weather event merging them into one monster storm could wreak havoc along the East Coast.

A tropical storm has formed in the Atlantic Ocean and another system may develop later this week — their close proximity is raising the possibility of a rare meteorological phenomenon.

Forecasters say Gabrielle hit its peak strength while the next named storm, Humberto, will likely form in the next few days. Here's what you need to know.